HO_x自由基的实地测量及其化学机制解析  

Observations of HO_x Radical in Field Studies and the Analysis of Its Chemical Mechanism

作　　者：陆克定[1] 张远航[1] 

机构地区：[1]北京大学环境科学与工程学院,北京100871

出　　处：《化学进展》2010年第2期500-514,共15页Progress in Chemistry

基　　金：国家重点基础研究发展计划(973)项目(No.2002CB410801);国家自然科学基金项目(No.40675072)资助

摘　　要：HOx大气化学机制的研究对于理解全球气候的变化和区域空气污染的控制具有重要意义。在现阶段,推进这项研究的关键环节之一就是开展包括HOx直接测量的综合性野外观测。由于HOx化学寿命很短、浓度极低,使其测量成为迄今为止大气化学领域最富挑战性的工作之一。本文综述了目前能够直接测量HOx浓度的技术方法,总结了历次野外观测中测量到的浓度水平,阐述了当前大气HOx化学机制的概念框架和历次观测对于它的贡献,评述了此项研究中尚待解决的关键问题。另外,还综述了HOx大气化学机制在我国的研究进展,指出了一些可能的重点研究方向。Researches on HOx radical chemistry would provide theoretical support for understanding the global climate change and regional air pollution control. At present stage, comprehensive field campaign including HOx radial measurements is one of the critical approaches to advance it. However, due to the very short lifetime and extremely low concentration in the atmosphere, direct measurement of HOx radical is one of most challenged works in atmospheric chemistry. This paper reviews the direct measurement techniques of the HOx radical, summarizes the observed dynamics range of its concentrations, introduces the current schematic view of the HOx radical chemistry and the important contributions from previous field studies, and discusses the main scientific questions that need further researches. Besides, the progress of the HOx radical chemistry within China is reviewed, and several potentially important research directions are pointed out.

关 键 词：HOX 测量技术 外场观测 大气化学 大气氧化性 闭合实验 

分 类 号：X13[环境科学与工程—环境科学]